Vulnerability-Lookup

GHSA-99PP-V74J-JMGV

Vulnerability from github – Published: 2025-12-24 15:30 – Updated: 2026-01-11 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

bpf: Free special fields when update [lru_,]percpu_hash maps

As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed.

Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value,_long' in 'pcpu_copy_value()'.

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{
  "affected": [],
  "aliases": [
    "CVE-2025-68744"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-12-24T13:16:29Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Free special fields when update [lru_,]percpu_hash maps\n\nAs [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing\ncalls to \u0027bpf_obj_free_fields()\u0027 in \u0027pcpu_copy_value()\u0027 could cause the\nmemory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the\nmap gets freed.\n\nFix this by calling \u0027bpf_obj_free_fields()\u0027 after\n\u0027copy_map_value[,_long]()\u0027 in \u0027pcpu_copy_value()\u0027.",
  "id": "GHSA-99pp-v74j-jmgv",
  "modified": "2026-01-11T18:30:29Z",
  "published": "2025-12-24T15:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68744"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3bf1378747e251571e0de15e7e0a6bf2919044e7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4a03d69cece145e4fb527464be29c3806aa3221e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6af6e49a76c9af7d42eb923703e7648cb2bf401a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/96a5cb7072cabbac5c66ac9318242c3bdceebb68"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/994d6303ed0b84cbc795bb5becf7ed6de40d3f3c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2025-68744 (GCVE-0-2025-68744)

Vulnerability from cvelistv5 – Published: 2025-12-24 12:09 – Updated: 2026-05-11 21:52

Title

bpf: Free special fields when update [lru_,]percpu_hash maps

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Free special fields when update [lru_,]percpu_hash maps As [lru_,]percpu_hash maps support BPF_KPTR_{REF,PERCPU}, missing calls to 'bpf_obj_free_fields()' in 'pcpu_copy_value()' could cause the memory referenced by BPF_KPTR_{REF,PERCPU} fields to be held until the map gets freed. Fix this by calling 'bpf_obj_free_fields()' after 'copy_map_value[,_long]()' in 'pcpu_copy_value()'.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/994d6303ed0b84cbc…
https://git.kernel.org/stable/c/3bf1378747e251571…
https://git.kernel.org/stable/c/96a5cb7072cabbac5…
https://git.kernel.org/stable/c/4a03d69cece145e4f…
https://git.kernel.org/stable/c/6af6e49a76c9af7d4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 994d6303ed0b84cbc795bb5becf7ed6de40d3f3c (git) Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 3bf1378747e251571e0de15e7e0a6bf2919044e7 (git) Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 96a5cb7072cabbac5c66ac9318242c3bdceebb68 (git) Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 4a03d69cece145e4fb527464be29c3806aa3221e (git) Affected: 65334e64a493c6a0976de7ad56bf8b7a9ff04b4a , < 6af6e49a76c9af7d42eb923703e7648cb2bf401a (git)
Linux	Linux	Affected: 6.4 Unaffected: 0 , < 6.4 (semver) Unaffected: 6.6.120 , ≤ 6.6.* (semver) Unaffected: 6.12.63 , ≤ 6.12.* (semver) Unaffected: 6.17.13 , ≤ 6.17.* (semver) Unaffected: 6.18.2 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

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{
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      "affected": [
        {
          "defaultStatus": "unaffected",
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          "programFiles": [
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          "versions": [
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              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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        }
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      "providerMetadata": {
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        {
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    "datePublished": "2025-12-24T12:09:40.839Z",
    "dateReserved": "2025-12-24T10:30:51.031Z",
    "dateUpdated": "2026-05-11T21:52:30.476Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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